Admission-valve for gas-engines.



G. N. SGOTI.

ADMISSION VALVE EOE GAS ENGINES.

APPLIOATION FILED DEU. 14, 1907.

2 SHEETS-SHEBT 1.

Patented N0v.17,1914.

meV/7, de@ y d? 1HE NORRIS PETERS Co.. PHOTO-LITHO.. WASHINGTUN. U. C.

C. N.- SCOTT. ADMISSION VALVE POR GAS ENGINES.

APPLICATION FILED DBO. 14, 1907.

' Patented Nov. 17, 1914,

2 SHEBTS-SHBET 2.

THE MORRIS PETERS CQ. FHOm-LITHO., WASHINGTUN. D4 CA vTo all whom it may concern AUNITED srinilrgriiiirorrioa CLARENCE N. soOTT, OF BUFFALO, NNW YORK, AssieNoR To INTERNATIONAL sTEAivi' PUMPCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

ADMISSION-VALVE FOR GAS-EN GINES.

specification of Leiters Patent. Patented Nov. 17, 1914.

Original application led January 23, 1905,` Serial No. 242,280. Divided and this. application filed- December i l 14, 1907.. Serial No. 406,517.y y

Be it known that I, CLARENON'N. SCOTT,

a subject of the King of Great Britain, *residing at Buffalo, county of Erie, and-State of New York, have invented certain new and useful improvements in Admission- Valves for Gas-Engines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same. j

vThis invention relates to inlet valve mech.- anism for internal combustion engines, the object being to provide an eflicient and reliable valve mechanism employing a regulating or cut-off valve separate from the distributing valve.

For a full understanding of'th'e invention a detailed descriptionof a construction embodying all the features of the same in the preferred forni will now be given in connection with the accompanying drawings forming a part of this specification, and the features forming the invention then specically pointed out in the claims.

In the drawings-Figure 1 is a vertical central section of the valve casing and valve mechanism. Fig. 2 is a vertical central section through the valve casing taken at right angles to Fig. 1. Figs 3, l, .5 and 6 are horizontal sections on, respectively, the lines 3, 4, nand 6 ofFig. 1. Figs. 7 and 8 are detail sections vof the valve casing and valves on the same line as Fig. 1, showing the valves in different positions.

Referring to the drawings, A is the eX- plosion chamber or end of the engine cylinder, B the valve casing mounted thereon and C a bracket on the top of the valve casing forming a support for the valve mechanism. The casing B is provided with airinlet 10 and gas inlet 11, the air and gas inlets -comv municating with the interior of the-valve through their respective air and gas inlet ports 1, 2in inner casing 12, the air ports being shown as extending through a large portion of the innercasiiig 12 and the gas Yports through a small portion, this .depending upon the characterof .the gas to beused. The gas ports are preferablyT small, 4as shown, so as to divide the gas into small jets and secure a thorough mixing of thel air` andl gas, and to provide for regulating-.the

quality of the mixture by a small adjustment yof `the valve. The inlet valve a seats upon a seat'3 on the bottom of the casing, and is `carried by stem 13, on which is secured rigidly withinlet valve a the cylindrical distributing valve Z9 on arms 14: on the valve stein 13'. .f The distributing valve b is provided `with air inlet ports l and. gas inlet ports 5 arranged to register with the air and gasports 1, 2 in inner casinglZ. A cylindrical regulating or cut Ofi valve c is mounted inside the distributing valve b, this valve c being carried by arms v15` on sleeve 16 mounted to slide on valve stem-13, its lower edge beingl seated on shoulder 6 on valve Z), and the lower vend of the sleeve in seat 7 on the valvestem 13 when the valves are closed, as shown .in Figs. Land 2. The

tion in the valves to pass out. into the air i pipe and thus relieve the pressure in the valves,A an annular valve cl spring seated by spring 17 being shown for this purpose, this valve opening the interior of the valves lto the air inlet through ports 8. v

'lhevalvestem 13 carrying valves @b -is adj ustably connected at its upper end to the cross headv 18 guided in the upper end of thebracket C and is connected' to the end'of the valve operating lever 19` by block 20in which the lever l19 ispivoted, this block., being mounted in theV cross head so astov permit sli glitrotary movement of the latter for rotar'y adjustment of the vvalve Z),- the lever 19 being Operatedby cam rod 21 from cam 22 on the cam shaft 23 to open the j valve and returned to close the, valve by spring 24, which is a tension* s'pringexing the valve and preferably made adjustable as shown. as provided with' a square end 25 extending above the 'bracket C, for applicationjof a wrench to rotate the yvalve stem.

tended by the operation of cam` 22'in open- The cross head-18 is shown f The sleeve 16 carrying the regulating .Orf l cut Oli valve c is mounted to slide vertically infa stationary sleevel 26, and is 'spring pressed downward by sprngQ? On-the valve stein 13,1 which spring is inclosedI by the sleeve 16, bears at its lower end' against the sleeve, and hasl at itsupper end an adjustable bearing 2S on the valve stem 13. The sleeve 16 wit valve c is held in its upper position if t the pressure ot spring 27 tch e pressed against the sleeve 1 suring 9, and withdrawn against the pressure ot spring at the proper time to release sleeve 1G lior the closing of the regula" or cut ell valve c by cam lever 29 operated by cam 30 on governor controlled cam shaft 31, this shalt 31 being controlled by any suitable governor which advances or retards the rotation of the shaft, so as to cr :a the regulating or cut olf valve c to drop rnlier or later in the stroke, according the speed of the engine.

A suitable governor and its connections to shaft 31 for controlling the continuous rotation ot the latter so as to withdraw catch e at the proper time, are shown in my Letters latent No. 898,271.

The operation oli the construction is as follows z-'lhe inlet valve a is opened by cam 'sting through cam rod 21, lever 19 and 'il n 13, and the distributing same time moved downward and gas ports 4, 5 pass the -.e inner casing 12 and open air and gas poi 1 2, to the interior of the valve and thus a mit to the explosion chamber or cylinder through the open inlet valve a the charge oliu air and gas mixed within the valve, the parts then being in the posil wn in liig. 7. Air and gas are thus lower el tion ad through the distributing valve l) unt Uhe rotation of the governor controlled sha 31 'withdraws the catch e by cam 30 and cam rod 29 against the pressure of spring 9, so as to release the sleeve 16, when the spring 2T which has been put under tension by 'the downward movement of the valve stem 13, throws the sleeve 16 and regulating or cut off valve c downward to close the air and gas inlet ports, as shown in Fig. 8, so that no air or gas is admitted during the remainder of the suction stroke. The inlet valve a and distributing valve 5 are new raised to close these valves by the spring acting through lever 19 land valve stem 13, and the regulating or cut oil' valve c is carried upward by the valves a, 5, and all the parts thus returned to normal position, as shown in Figs. 1 and 2. On ignition, the pressure produced by the firing ol' the gases within the valves Z9, c will be relieved through the opening oi the automatic relief valve el and the burnt gases thus blown out to the air pipe.

The valve mechanism may be used without provision ,tor adjusting the relative amounts of and air, the air and valve ports being suitably proportioned, but it is preferable that some means be provided for adjusting the relative amounts ot air and gas, in accordance 'with the quality of the gas used or to vary the quality of the mixture. In the construction shown, this result is secured by the rotation of the valve b by the head 25, as previously described, this slight rotation being permitted by the connection between the cross head 18 and the lever block 20. rlhe gas ports 5 in the valve may thus he adjusted relatively to the gas ports 2 inthe inner casing 12, so as to regulate as desired the amount of gas admitted. 'lhe air ports may be formed so that the amount ot air admitted is adjusted simultaneously with the amount of gas, il' desired, or the air supply may be substantially uniform.

The subject-matter claimed herein is shown and described, but not claimed, in my application Serial No. 242,280, iled January 23, 1905, of which the present application is a division.

What is claimed is:

1. ln an internal combustion engine, the combination with an inlet valve, of a distributing valve controlling the air and gas ports, and a governor controlled regulating valve separate from the distributing valve and arranged to cut olf the admission through the distributing valve at varying times with relation to the closing of the inlet valve in accordance with the operation of the engine.

2. ln an internal combustion engine, the combination with a cylindrical distributing valve controlling the air and gas ports, of a cylindrical governor controlled regulating valve separate from he distributing valve and moving parallel with the distributing valve for varying the length of time during which the ports are open, in accordance with the operation ot' the engine.

3. ln an internal combustion engine, 1the combination with an inlet valve, of a distributing valve in line with the inlet valve controlling the air and gas ports, means for actuating the inlet and distributing valves for admission, and a governor controlled regulating valve separate from the distributing valve and arranged to cut oit the admission through the distributing valve at varying times with relation to the closing of the inlet valve in accordance with the operation of the engine.

l. In an internal combustion engine, the combination with an inlet valve and its valve stem, of a cylindrical distributing valve carried by the valve stem and controlling the air and gas ports, a regulating valve separate from the distributing valve and moving longitudinallyv of the valve stem, and means for moving the regulating valve independently of the distributing valve to vary the time during which the ports are open.

5. ln an internal combustion engine, the combination with an inlet valve and its valve stem, of a cylindrical distributing valve carried by the valve stem, a cylindrical valve, a spring for actuating the regulating valve, and governor controlled means for varying the time of cut o by the regulating valve in accordance with the operation of the engine.

7. In an internal combustion engine, the combination with a cylindrical distributing valve, of a regulating valve separate from the distributing valve and acting to cut oiI the admission of air and gas through the vdistributing valve, a spring for actuating the regulating valve, a catch for holding the regulating valve in position and governor controlled means for releasing the catch.

8. The combination with the inlet valve a,

'of cylindrical distributing valve valve casing B having air and gas ports controlled by the distributing valve, and a governor controlled cylindrical regulating valve c arranged to close the air and gas ports independently of the distributing valve and at varying times with relation to the closing of the inlet valve, substantially as described.

9. The combination .vith the inlet valve a, of cylindrical distributing valve valve casing B having air and gas ports controlled by the distributing valve, governor controlled cylindrical regulating valve` c arranged to close the air and gas ports independently of the distributing valve, a spring Jfor actuating the valve c, anda governor controlled catch for holding and releasing the valve c, substantially as described.

10. The combination, with a valve casing having air ports and gas ports, an angularly adjustable longitudinally movable distributing valve provided With ports arranged to permit 'the passage of air and gas from the air and gas ports of the casing, and means for moving said distributing valve longitudinally to open and close said air and gas ports, of a governor-tripped quick-acting cut-ofil valve arranged to cut oli the ports of the distributing valve.

11. In an internal combustion engine, the combination, With an inlet valve, means for opening and closing said vvalve at prede.

termined points of the engine stroke, and a cut-off valve arranged to control the ad` mission of mixture to the inlet valve, of

means coaxial with the cut-oii" valve and arranged to adjust the proportions of the mixture, means for opening the cutoff valve simultaneously with the inlet valve, and governor-controlled means for closing the cut-off valve at varying times before the closing of the inlet valve 1n accordance with the operation of the engine.

In testimony whereof, I have hereunto set l my hand, in the presence of tvvo subscribing Witnesses.

yemmener NQ scorr.

II/Yitnesses:

S. B. DAUGHERTY, J. H. O. BUNGE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. i 

